Window platform



July 27, 1948.

Filed Jan. 2, 1946 E. M. N EWKI RK WINDOW PLATFORM 2 Sheets-Sheet 1 Fig-1- INVENTOR. 6 ELMER M. NEWKIRK July 27, 1948: E. M, NEWKIRK. 2,445,860

WINDOW PLATFORM Filed Jan. 2, 1946 2 Sheets-Sheet 2 v INVENTOR. v ELMERM. NEWKIRK dinal edges thereof.

Patented July 27, 1948 UNITED STATES PATENT OFFICE I 2,445,860 7 WINDOWPLATFORM Elmer M. Newkirk, St. Joseph, M0. Application January 2, 1946,Serial No. 638,674

Claims. 1 The present invention relates to window platforms and is moreparticularly concerned with demountable and adjustable staging suitablefor outside use in washing windows.

.Theprimary object of the invention is to provide a demountable stagingwhich may be readily assembled and adjusted to windows of variouswidths. V

Another object of the invention is to provide a safe staging for windowwashing.

A further object of .the invention is 1:0 provide a platform of thecharacter referred to of simpler and more compact construction than isdisclosed in prior devices.

With the foregoing and other objects and advantages in View, theinvention consists of the novel construction and arrangement of partshereinafter described and claimed. I

In the accompanying drawings, illustrating the invention:

s Figure 1 is a top staging. s s

Figure 2 is a top plan view of the complete stagmg.

Figure 3 is a detail perspective view of one of the staging supportblocks.

Figure 4 is a detail perspective view of the angle.

plate to which the block is fastened.

Figure 5 is a vertical section on line 5-5 of Figure 6.

Figure 6 is a side elevation of the staging in operative position on awindow sill. I

Like numerals are used in the drawings and description to designate thesame parts of construction.

{The frame proper of the staging consists of two parallel side bars I,constructed preferably of light structural steel in the form of angleiron.

At the outer or projecting ends these two bars are connected by anadjustable cross-bar 2 of the same type of material as that in the sidebars. Adjustability of theend bar 2 is, attained by constructing it intwo telescopic sections held together slidably by means of keepersleeves 3 and bolting the outer ends of said sections to the side barsI.

.The opposite or inner ends of the side bars are mounted to slidelongitudinally in angle plates 4 provided with channels 5 to contain thelongitu- These channels are formed by flanges on the inside of theelement 4.

Welded or otherwise suitably secured to the plate 4 so as to dependtherefrom, is a rectangular, hollow block 6, constructed of metal andprovided with open sides and flat top andbottom. The two elements 4 and6 are provided centrally with registering slots 1 for the reception of,a set screw 8 which is adapted to fasten said elements to thehereinafter. described cross-bar 9, when adjusted to the window opening.The same is View of the frame of the true concerning the oppositelylocated element 4 i and attached block 6. With the foregoingconstruction, parallelism of bars I can be maintained. Both of theblocks 6, are designed to rest onthe outer portion of'the window sill,as illustrated in i Figure 6, and the two blocks, as well as side barsI, are held together adiustably by a sectional width of the frame,dependent on the'spacing' apart of side bars I, is adjusted to therequirements of different sized windows, by means of the two sectionalcross-bars 2 and 9;

H angles from the inner ends of side bars I and adapted to impinge thewall on the inside of the f building, the bars being extended for thepurpose.

The platform for the staging comprises two sections of timber,consisting of transverseboards I3 suitably spaced apart and positionedseats to permit the boards of one to slide between the? boards of theother, thus efiecting a lateral adjustment of width to conform to theadjustment of side bars I of the frame. Longitudinal strips I I arebolted on top of the transverse boards I3 each with a vertical leg I!adapted to abut the outer edge of the window sill. This leg is bentinward at the upper extremity at a right angle to fit in the sleeve I6.A set screw, I8, in the bottom of the sleeve, impinges the bentportionand I secures this end ofthe bracket in its adjusted position.

1 The other end of each bracket is containedin a.

similar keeper sleeve and adjustably fastenedin place by means of a setscrew I 8. As these brackets are designed to serve as supports for theplate form when inuse, the brackets will be constructed of suitablestructural steel for strength and the long hypothenuse-like arm, will besufliciently.

proportioned to stand the strainof the platform longitudinal guard railsand uprights, of wood or other suitable material and the whole :beinghinged to the board platform, as at 2|], to fold inwardly. A removablerod 2|, with depending The frame of I the staging is secured to theinside of the window frame by means of laterals I2, projecting at righthooks on the end, is provided to fasten the sides together at theirouter ends.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A portable platform for use with a window frame having an outwardlyprojecting window sill, said platform comprising a pair of parallelhorizontal side bars adapted to be placed through the window frameagainst the facing sides thereof, laterally outwardly projectingportions on the inward ends of said side bars for engaging the back ofthe opposite sides of the window frame, an outer cross member extendingbetween and securable at'its ends to the outer ends of said side bars,said outer cross member being adjustable lengthwise to space said sidebars at the proper distance for engaging said side bars with the facingsides of thewindow frame, a window sill block depending from each sidebar and slidably adjustable therealong to position for resting upon thewindow sill, and an inner cross member extending between and securableat its ends to said window. sill blocks for positively maintaining saidside bars in engagement with the facing sides of said window frame.

2. A portable platform for use with a window framehaving an outwardlyprojecting windowsill, said platform comprisinga pair of parallelhorizontal side bars adapted to be placed through the window frame,against the facing sides thereof, laterally outwardly projectingportions on the inward ends, of said 'side bars for engaging the back ofthe oppositesides of the window frame, an outer cross member extendingbetween and securable at itsendsto the outer endsv of said side bars,said,

outer cross member being adjustable lengthwise to space said sidebars atthe proper distance for engaging said side bars with the facing sides ofthe. window frame, a window sill block depending from each side bar andslidably adjustable therealong to position for resting upon the windowsill, and. an inner cross member extending between andsecurable at itsends to said window sill blocks for positively maintaining said sidebars in ens m t with. he fa n s de o sa Window frame, and means fordrawing said laterally. outwardly projecting portions into engagementwith the back of; the opposite sides of the window frame, said'meanscomprising a brace depending from and slidabl-y adjustable along eachside bar for engaging the outer side of the sill with said laterallyoutwardly directed side bar portions engaged with the'back of oppositesides of the window frame.

3-. A portableplatform for use with a window frame having an outwardlyprojecting window sill, saidf platform comprising a pair of parallelhorizontal side bars adapted to be placed through the window frameagainst the facing sides thereof, laterally outwardly projectingportions on the inward ends of said side bars for engaging the back ofthe opposite sides of the window frame, an "outer cross member extendingbetween and securable atits ends to the outer ends of said side bars,said outer cross member being adjustable lengthwise to space said sidebars at the proper distance forengaging said sidebars with of saidwindow frame, a protective side hinged at its lower edge to each sidebar for folding laterally inwardly and downwardly to a position betweensaid sidebars, and a rod removably engageable at its ends with upperportions of said sides for maintaining said sides securely in verticalpositions.

4. A portable platform for use with a window frame having an outwardlyprojecting window sill, said platform comprising a pair of parallelhorizontal side bars adapted to be placed through the window frameagainst the facing sides thereof, laterally outwardly projectingportions on the inward ends of said side bars for engaging the back ofthe opposite sides of the window frame, an outer cross member extendingbetween and securable at its ends to the outer ends of said side bars,said outer cross member being adjustable lengthwise to position forresting upon the window sill, and an inner cross, member extendingbetween and securable at its ends to said window sill blocks forpositively, maintaining said side bars in engagement with the facingsides of said window frame, spaced platform forming elements securedonly at their laterally outward ends to each side bar and extendingtoward the other sidebar and interleaved to provide a substantiallycontinuous laterally expansible platform between said side bars.

5 A portable platform for use with a'window frame having an outwardlyprojecting'window sill, said platform comprising a pair of parallelhorizontal side bars adapted to be placed through the window frame.against the facing sides thereof, later-ally outwardly projectingportions on the inward ends of said side bars for engaging the back ofthe opposite sides of the window frame, n ut res me b m n n be an scur'able at its endsto the outerends, of said side bars, said outercross member being adjustable lengthwise to space said side bars at theproper distance for engaging said side bars with the facing sides of thewindow frame, a window sill block depending from each side bar andslidably adjustable therealong to position for resting upon the windowsill, and an inner cross member extending between and securable at itsends to said window sill blocks for positively maintaining aid side barsin engagement with'the facing sides of; said window frame, each windowsill'block being formed with an aperture slidably receiving a relatedend portion of said inner cross member, and means for locking the endsofsaid inner cross memberin place in said apertures.

ELMER M. NEWKIR L REFERENCES CITED The following references are ofrecord in the file of this patent:

